Frame of a skating board bike



FIG. 1 is a perspective view of a frame of a skating board bike showing my present design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left view thereof;

FIG. 5 is a right view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view; and,

FIG. 8 is a perspective view thereof, the board shown in broken lines are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a frame of a skating board bike, as shown and described. 